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#include <fstream>
#include <vector>
using namespace std;
ofstream fout("permutari.out");
int n;
vector <int> permutare;
bool used[10];
void backtrack(int poz) {
if(poz == n + 1) {
for(int x : permutare) {
fout << x << " ";
}
fout << "\n";
return;
}
for(int i = 1; i <= n; i++) {
if(!used[i]) {
permutare.push_back(i);
used[i] = true;
backtrack(poz + 1);
permutare.pop_back();
used[i] = false;
}
}
}
int main() {
ifstream fin("permutari.in");
fin >> n;
backtrack(1);
return 0;
}